Apparatus for controlling the grinding of flats of carding-engines



(No Model.)

J. 2 Sheets-Sheet 1.

APPARATUS FOR CONTROLLING THE GRINDING 0P FLATS 0P GARDING ENGINES.

No. 555,329. Patented Feb. 25, 1896.

Z01 Z72 ecrcrelr M ZZ I ANDREW B GRAHAM Wm'wumn WASHING ON D c NoModel.) 2 Sheets-Sheet 2.

J. E. PREST. APPARATUS FOR CONTROLLING THE GRINDING OI FLATS OF GARDINGENGINES.

No. 555,329. Patented Feb. 25, 1896.

AN DREW E GRAHAM. PHOT0-|rn1l7.WAsmNGTOH,h c

lJNiTED STATES PATENT OEEicE.

JOHN E. PREST, OF COHOES, NEW YORK.

APPARATUS FOR CONTROLLING THE GRINDING OF FLATS F CARDlNG-ENGINES.

SPECIFICATION forming part of Letters Patent No. 555,329, dated February25, 1896.

Application filed October 1,1895. Serial No. 564,273- No model- To allwhom it may concern:

Be it known that I, JOHN E. PREST, a citizen of the United States,residing at Oohoes, county of Albany, and State of New York, haveinvented certain new and useful Improvements in Apparatus forControlling the Grinding of Flats of Carding- Engines, of which thefollowing is a specification.

The. invention relates to such improvements; and it consists of thenovel construction and combination of parts hereinafter described andsubsequently claimed.

Reference may be had to the accompanying drawings, and the letters ofreference marked thereon, which form a part of this specification.

Similar letters refer to similar parts in the several figures therein.

Figure l of the drawings is an end view in elevation of my improvedapparatus in position for use. Fig. 2 is a side elevation of the samewith one end broken away. Fig. 3 is a vertical cross-section taken onthe broken line 3 3 in Fig. Fig. a is avertical section of thegrinding-roller bearings, taken on the broken line L A in Fig. 1. Fig.shows a modiflcation. Fig. 6 is a vertical cross-section taken on thebroken line 0 6 in Fig. 5.

For a fuller description and better understanding of the invention whichforms the subject-matter of this application reference may be had to thedrawings and specification of United States Letters Patent No. 519,771,issued to me May 15, 1894.

In my patented apparatus the flats of the carding-engine weresuccessively carried, by a sliding grinding-block, past a grindingroller rotary in stationary bearings in such a manner that the teeth ofthe inclined fiat were uniformly engaged and ground by the roller.

In the apparatus which embodies my present invention the flats aresuccessively moved along a stationary and horizontal slideway and thebearings of the grinding-roller are automatically moved toward eachinclined flat as it passes the roller, whereby the teeth are uniformlyengaged and ground by the roller, as will be hereinafter more fully described.

Referring to the drawings, A is abifurcated bracket-frame, whichsupports in one and one end of a lever A by means of the pivot Acontained in the elongated opening or bear in g A in the bracket-arm.The other end of the lever is supported by the cam-shaft A rotary inbearings in the other bracket-arm, the cam A fixed on the cam-shaft,being rotary in an aperture in the oscillatory end of the lever A. Thelever A supports intermediately of its ends the bearing-box A adjustablevertically by means of the adjustingscrew A which supports the box inthe vertical slideway A in the lever A. The grinding-roller B has one ofits end journals B supported by and'rotary in the bearing-box A. Theother end journal of the roller is sup ported bylike mechanism.(Notshowu) Rotary movements of the cam-shaft in opposite directions willimpart an oscillating movement to the roller-supporting levers, andapproximately vertical movements to the bearingboxes and roller.

As a means for operating the cam-shaft, I provide the same with arock-lever B fixed on the shaft and controlled by the spring B Therock-lever is actuated by means of the hook B pivoted at one end uponthe lower end of the rock-lever and provided at its other end with thecatch or offset B adapted to be successively engaged by each of themoving flats B as their teeth engage the roller.

The flats are connected by chain 13 (shown in part only) in the usualwell-known manner and ride along the track 15 until they strike theguide 0, which forces them successively up against the stationaryslideway-guide O, the guide C being actuated by the weight C andcontrolled by the adjustable stop 0 The operation of the apparatus is asfollows: The flats, being carried in the direction of the arrow by theirconnecting-chain in the usual well-known manner successively intoengagement with the weight-actuated guide 0, are forced by said guideupward until their beveled ends strike the stationary slidewayguide 0,which maintains all the flats in engagement therewith in the samehorizontal plane and at the same angle of inclination. The hook is soformed that its catch is engaged by each flat just as the fiat engagesthe roller. As the flat advances, it carries the hook with it, therebyactuating the cam-shaft and cam to depress the roller-supporting leversand lower the roller just fast enough to flat as it passes beneath theroller.

engage the successive teeth on the inclined As the fiat passes theroller, the inclined nose C on the hook engages the stop G fixed on thestationary slideway-guide, and gradually lifts the hook until itdisengages it from the fiat after the grinding of that flat iscompleted. The controlling-spring immediately restores the parts to theposition shown in Fig. 1, the ground fiat passing on over the cut-awayor depressed portion of the weight-controlled guide, when it issupported by the track B By varying the adjustment of the bearingbox A Iam able to vary the amount which the apparatus will grind from the teethin one operation of grinding and to compensate for wear of the parts,and I am also able by my improved apparatus to secure very greatuniformity and precision.

I11 Figs. and 6 I have shown the lever D which supports thegrinding-roller bearings pivoted at one end to one arm of the bracket D,and at its other end bya loose pivotal connection to one arm D of anangle-lever pivoted upon the other arm of the bracket. The angle-leveris controlled by a spring D and its other arm D is adapted to beconnected withaflat-engaginghook. (Not shown.) The pivotal connectionbetween the lever D and the angle-lever comprises a stud D", looselyrotary, and movable longitudinally in the slot 1) in lever D, and havinga screw-threaded stem D integral therewith and separatedtherefrom by anintegral flange D The threaded stem is inserted through an elongatedslot D in the angle-lever a-rm D along which slot it is adjustablymovable, and secured therein by the nut D and fiange'D A uni-formmovement of the anglelevercan be made to impart varying movements to theroller-supporting lever by means of the adjustable pivotal connectionshown, the adj ustment being accomplished byloosening the nut D andsliding the stud and threaded stem along their respective slots towardthe pivot of the angle-lever to diminish the movement of the roller, andfrom said pivot to increase the movement of the roller. The pivotalconnection is locked in its adjusted position by tightening the nut DThat I claim as new, and desire to secure by Letters Patent, is-

1. In an apparatus for controlling the grind ing of flats ofcarding-engines, the combination with a stationary slideway for theflats, of a grinding-roller rotary in a bearing-support pivoted at oneend and oscillatory toward and from the slideway, and flat-actuatedmechanism for imparting oscillating movements to the roller-bearin gsupport, substantially as described.

2. In an apparatus for controlling the grinding of flats ofcarding-engines, the combination with a stationary slidewayand means formoving the flats successively along the slideway, of a grinding-roller,roller-supporting levers, lever-actuating cams, and means for operatingthe cams, whereby the roller is moved toward and from the slideway,substantially as described.

3. In an apparatus for controlling the grind ing of flats ofcarding-engines, the combination with a stationary slideway, and meansfor moving the flats successively along the slideway, of agrinding-roller, roller-supporting levers, lever-actuating cams, aspring-controlled, cam-actuating lever, a flat-engaging hook pivotedupon the cam-actuating lever and provided with an incline, and ahook-releasing stop in the path of the hook-incline, substantially asdescribed.

In testimony whereof I have hereunto set my hand this 28th day ofSeptember, 1895.

JOHN E. PRIEST. lVitnesses:

FRANK O. CURTIS, J. G. CURTIS.

